| 摘要 |
PURPOSE:To provide the subject new compound capable of easily forming a vacuum evaporation film, having high solubility in organic solvent, storage stability and heat-resistance and exhibiting high absorptivity to near infrared ray and, accordingly, giving an optical information recording medium having excellent storage stability, etc., and high reflectivity and contrast. CONSTITUTION:The compound of formula I [R<1> and R<2> are H, alkyl, etc.; R<3> is group of formula II or III (R<4> and R<5> are H, aryl, etc.; R<6> is halogen, nitro, etc.; (m) is 0-4; R<7> is nitro, cyano, etc.; (n) is 0-5; R<8> and R<9> are H, aralkyl, etc.; R<10> is aralkyl, aryl, etc.; (p) is 0-3), etc.], e.g. the compound of formula IV. The compound of formula I wherein R<3> is group of formula II can be produced by reacting 3,4-dichloro-3-cyclobutene-1,2-dione with a 1,1-diarylethylene compound of formula V in a solvent, removing the solvent, hydrolyzing the residue and reacting the product with an imidazoquinoxalinium derivative of formula VI (X is Cl, Br, etc.). |
